I have an 86-88 1052 motor in an 86 (to the best of my knowledge, that is) 750 chassis. Forks from 86 LTD, no bodywork, GS1100/1150 round headlight. 2.5 750 front wheel, 4.0 1100 rear (both are the first gen 6-spoke). Soon to have salvage title).
I'm also in Phoenix, let me know if this is a bike you'd want to see.