Check out the link in my signature for results of porting a stock lower. Good move for stealth in street racing - especially with stock E7 heads. The Explorer is a good intake too, but anyone who knows Stangs will spot it. I;ve seen guys make right at 250RWHP with stock cam, stock E7 heads and long tubes with a ported lower. In a light 3,100-3,200# car, high 12s have been reached. Cost is usually ~$130 including shipping.
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Tom (Torque) Moss
88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE).
http://www.fastlanecars.com/
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