Dat's cheating. Gotta be an 85 based on da LT.
What I'm saying is, you can't build a period correct trike and base it off of the quad that did not exist during that period. It would be useless to use a counterbalanced LT engine, because the balancer is useless in a forked chassis. Base it on the aircooled RM, or, the RD bike, ( I think, but still non counterbalanced.)
If the Tri- Racer had been built and ran extensively, Suzuki would have ditched the big bulky Dogbone link rear suspension before the LT was released in 85 though LOL