I've got a 91 L98 and if I was going to buy a new one, I would probably buy an LT1. The L98 has more low end torque, but struggles around 5000 rpms. The only real difference is the intake. There are also many more upgrade option for the LT1 in comparison to the L98. If your going to change the intake, buy an older L98 for less money. If your not worried about the $$, wait for the 06 LS7.

Other than that, I haven't had any real problems with my car. It's got about 94000 miles. Traditionally, these cars have cooling problems and brake problems. I've replaced my radiator twice, but my car sits a lot. The position of the radiator and the mounting seats cause problems.

They're great cars and unique in the endless sea of Mustangs.