Heads for 440

'72 dart
440 bored.030
bone stock 452 heads
TRW 2355 six pack pistons, 2.062 comp height, around 9.5:1
MP 284/484 cam advanced 4 degrees
street dominator intake
race prepped TQ by demonsizzler
1 7/8 fenderwell headers
2800 stall convertor, 3.23 suregrip.

This is just a fun street car and
It does decent but i want more out of it. Trick flows would be nice but just not in the budget. Was thinking if speedmaster had a good black friday sale, that i might get a set of their aluminum heads and wondering if if they would produce a noticeable difference? I would not be porting them, just using them as they come after the machine shop checks them out..Not sure how much better they will flow over stocks or any of that and hoping someone would know., and also wondering if they will even work with my pistons because the stock 452 are 88cc and i believe the speedmasters are only 74cc,,wich would jack up compression a good bit. This thing already pings if the timing advances too quick..still dialing that in..