Swapping the computer is expensive because you need a wiring harness because the pins on the plug for the J4J1 (cobra computer) are different from the older a9l computers. The harness is available from PRO-M and is around $600. You can get a chip burned to take care of all of the problems associated with the cobra computer. The J4J1 is actually a better computer than the old A9L it just responds quicker to changes and because of this it doesn't respond well to bigger cams, heads, etc. There are several options on the computer. The EEC tuner works well, it's what I have, it's basically a chip that you can change yourself using a laptop.
I'd look at the AFR heads, you can get a set of the 165 cc heads that would work great with your combo now, even with the stock cobra intake. Sorry this got so long.......
Ryan
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94 cobra, steeda tri-ax, bbk longtubes, dr. gas x pipe, eec tuner, ultra flo's, 65 mm tb, underdrives, 75 mm MAF, homemade CAI, steeda #19 cam, Steeda LCA's, 3.73's, subframes
13.7 @ 103.03 before cam and gears
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