Well...anyone can go with the boring 350....sometimes its better to be different then just throw something together because its cheap. My 292 cost a fair amount to make the horse power I'll be making, but it'll kill a 350.....And funny you say your 250 gets 15...My 292 gets 15 with a sm420 and 3.73 gears with a 30 inch tire....and with the mods and 5 speed I'll be putting in it'll acutally bump up to 16-17 mph....and its well worth the smile and knowledge of knowing I have something way cooler and more unique then a sbc. My 2 cents.
