[Bill Wells]

yep , 2 good points mentioned :

1. i keep forgetting about the raised cowl and higher scoop on later spf's vs my older 156 , thus allowing more clearance.

2. also, my 1" spacer was also tapered - i forgot about that til i read a later reply . my chassis dyno figures of about 20 hp and 20 trq at rear wheels increase would theoretically put the crank in the high 20s range . also, my dyno was on a mustang dyno which typically understates the rwhp vs a dyno jet chassis dyno .

Bill.