ok guys i can decide on what set of heads i should get or if i should just tweak the stock heads and have the work done but the specs are
tpi intake upgraded runners and base etlebrock
heads are stock
cam is Cam specifications: Duration & lift @ .050 & Lobe separation angle (LSA)
Lobe center angle is 113 , durations @.50lift is 230 intake ,236 exhaust valve timing @0.006 lift
Open intake 31 btdc close abdc 96
Exhaust open 81 bbdc 27 atdc
Comp cam part number 12-467-8(10) grind number 280xfi hr13
Using 1.6:1 rockers hydraulic roller lifter
26 pd injectors
adjustable regulator
steel crank ,
high volume oil pump

now any sugestions on the heads for this or and would i have clearance issues with flattop pistons ?

is my cam to aggressive for tpi ?

far too much cam for TPI. And you wait on choosing a cam until after you have the best heads you can afford.

whats the most agressive cam would you pick and most hp can you get out of it ?

again, you don't pick the cam until after you get the best heads you can afford. Hopefully AFR's 180cc heads. Some heads have poor exhaust ports and need extra exhaust duration, others have ports that stall beyond a certain lift. Get heads first, then you can worry about a cam.