What combo to do?

[87TtopMan]

Hello mustang fans, I am new to the site and been reading alot and wanted to see what you guys think of what I have and what to go with it on a budget for best results. I just recently bought my new pride, 87 T-top GT, so now where to go with it. I got a good deal on these items and want to finish my combo so tell me what you think I should get for Heads and Cam. The engine is fully stock (been rebuilt) 3.73 gears, underdrive pulleys, shorty headers, 2.5 h-pipe off road, and flowmasters which is the usual.

These are the items I got for $500

GT40 Intake
24 lb injectors
65mm TB/EGR spacer
Adjustable fuel pressure Regulator
Computer out of 90 GT with Mass air flow meter

I was offered a set of GT40x heads with port job for $550 today while getting subframe connectors installed, so let me know if you think that is a good deal, I am on a budget so I can't really afford new afr heads.

Thanks