Looking to help out a friend with a mild 360 build for his Aspen wagon. Starting with a stock mid 70's LA engine and looking for 325-350HP give or take, with factory heads. Maybe gasket match the intake and heads. What do you recommend for pistons and cam. We will be using headers, an RPM intake, a 904 trans and 3:23 gears. Looking for a driver with a little giddy up to it.