I have a 1989 Reatta with 38oo v6. Want to do straight_cut gears because of beautiful sound. Had them on 383 stroker in a Camaro, NEVER needed radio. Seems to me if we convert up: from 3800 to 5066 cc=3.8 to 5.0 liter = 225 c.i. to 300 c.i., assuming same V-angle, why would a conversion not be do-able? Only Aussies and Brits seem to have "awsked" this. Where is American ingenuity? Thanx for any and all ideas.