125cr rebuild

Currently riding the European EVO class on my 83 Maico 490 beast named " Adolph". Due to no age limits in that class I'm being ran over by young guns on newer bikes so I'm switching classes next season to the +50 class so I can have some fun.I bought a garage full of 125's ( have always been a 125 rider), a 78CR,81WR,2-82WR's and a 84WR plus 2 extra complete motors. I live in Sweden so this kind of find is common. The 84 and one of the 82's will be rebuilt and sold to fund my next seasons project. I need some opinions on a combination to put together out of the remaining bike heap that will make a former So Cal 125 pro proud to sling a leg over in next years battles.
Also: I have 4 sets of shocks to contemplate, all need rebuilding of course.
Koni 23x 1160 110 remote reservoir, 17"
Betor GAS-GP piggyback 16"
Girling 13" standard...not a option!
ITC 19", will have to be shortened to be useable
Any opinions on which to concentrate on and who is a reliable rebuilder for choice?
Relocating back to SoCal soon so will be bringing my arsenal with me, see you at the track....

belt the living crap out of the 78 engine with a port tool and wack it in the 84 frame..will take some grafting but the 84 has tighter turn and itc rear..thats my thoughts

Hmmm? Going to go mock it up tonight and do some brainstorming... good one!

Mocked most of it up, looks damn good actually. Pretty cool with the air box enclosed in the frame and the frame exposed, skeletal look. Can just bolt on vintage round numbers plates towards the rear, simple and functional ?and can use the long travel ITC's to boot. How much difference in the head angle from the 81/82 frame and the 84? Noticed the 84 swing is a bit longer and shock mounts moved forward as opposed to the 78 swing I was going to use.

The 81/82 frame has 30.5°rake while the 84 has 28° rake assuming it is not a leftover 83 which has the same rake as 79-83 frames. Seeing the 84 frame is a WR frame that increases the likelyhood of it being a leftover but correctly numbered leftover frame. In that case I feel since you mentioned selling the 84 anyway that you would do well building on the 78 frame and setting it with the best suspension you can mount on it. If your 78 frame does not have timken stem bearings, it is worth putting them in . You can then put any Husqvarna front end from 1978 -1989 on that frame. Balance out the suspension on that frame and it will carve better then the 79-83 models. You can also mount any engine you have into that frame just by quick fabbing front mounting plates

Any way to measure or other tips on checking if it is a leftover from 83?

You learn something evryday

84 was LC and frames for 84 LC and 84 AC are not interchangable (center port vs. angle port exhausts)

You can take a level protractor and compare the steering tube angle against one of the 82 frames you have. If the angle matches the 82 then the WR frame is a 30.5 frame. 2 deg difference is noticeable