wow i didn't think i would start a war here.. the 170 in the valiant i own is fairly low miles it has 81,000 original miles on it.. and the build on wether it is a 170 or 225 is going to be several years down the road.. same with the complete rest. on it but i don't have a 225 it be nice to have one given to me like bill..lol the car probably won't get hot rod to much.. but i love the sound of a hopped up engine wether it is a slant 6 or a 340 which i am keen on thats what i had in my drag car back in the 90's which most guys thought it was a big block by the sound of it running.. it was a full body metal 73 plymouth duster which ran a best of 10.50 at 135 mph in the 1/4 mile.