what heads to run on a 273

so i found a set of 4323302 heads full stock rebuild for 500 bucks...im picking up this weekend..just want to double check that this is the ones i want...so question now when i look for a manifold ill be looking for a 88-91 318 manifold??want to make sure befor i spend $500 bucks....thanks again fabo!!

also will those stock springs work with a comp cam 20-231-4..or im i going to have to get beefyer springs