thanks for the info Hb. congratz on your record too, i was thinking of just running the stock 78 750 manifolds with flatside mikuni's and 2 750 inlet cams, only a couple of degrees here and there and much the same lift as the sifton #390
i'm oldish and have looked up the t100 tuning kit to get an idea of lengths of pipes-finish at the back of primary , short megas to about 4" finish about the back axle.
what's your low end power like, with the 390, another site says it's not streetable but I've put radical cams
in cars and put up with it
cheers, Ken

Last edited by ken sak; 05/10/15 9:08 am. Reason: time