Slant 6 MPG Upgrades?

What MPG are you shooting for? Have you looked into what the slant guys are getting with the Sniper EFI?

When you compare a modern engine to the slant there are several technologies that allow higher efficiency (MPG's) and power over the slant 6. Higher static compression, control over dynamic compression, EGR or exhaust re-breathing systems, more efficient chamber design, multiple valves, better flowing intake & exhaust ports, Spark plug location and reach better intake tracts and exhaust systems all help.

If anything ditch the 904 with GV and get a T5 manual from a 87-93 5.0 Mustang. Reducing rotating mass off the engine is a win to a point.