I had 3.08, 3.55 3.73 and 4.10, now has 4.10 for competition purposes.
I personally prefer 3.73 for the street, changing to that from 4.10 soon.
About the codes the are plenty of articles on the net, check here @ mustangworks, if not check sn95.com. you have to find the conector in the engine bay, make a cable bridge and switch on the car. and the check engine light will give you the codes. Or even better you could buy a code reader. But is not really useful if you don't do it too often.
lito
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92GT,SOLO RACER, COBRA BRAKES, R1 TIRES, GT40, GT40X HEADS 58CC, 24LBS, 70MM/65MM, E303, 4.10, MANY ROAD RACE MODS, CORVETTE, CAMARO, RX7 AND SUPRA SOLO EVENT EATER
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