If you want the upper and lower ported, Extrude Hone is the only process that can port the upper without cutting it all apart. EH gets $250 for the upper and $250 for the lower.
If you want to just port the lower, which many guys do, I can port that to a 1250 or 1262 gasket size for $100 + shipping cost - typically $25-40 rounf trip or $125-140 for everything.
You need to think about the head runner though. Measure your head runner and see if they are 1.10-1.15" wide and about 2.0" tall. If they are, they match the 1250 size gasket now.
The site wouldn't allow me to attach a photo I posted before - Look at "Cheap 5.0 Mods" thread for a photo of one of my ported stock lowers next to a stock lower. These ports are done to just shy of a 1250 size gasket to match Thumper heads.
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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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