In my signature is what I've picked up over the last two years, I want to put it together this winter, I am out of money! What would you recommend with a 98,000 mile block? That is running strong. Just freshen it up with new pistons/rings bearings? (cheapest) Or do a 306 /331/347 combo? also need a cam choice....(not custom) too much$$$ This car is not going to be a race car so I want it to run strong and long, I read how to do a 347 block, do you have to grind away the bottoms of the piston skirts with a 331?