It's listed in the parts catalog as "accelerator switch", P/N 56006315AB. It's showing as still available - or at least, *not* showing as discontinued - at my go-to Mopar parts discounters. Looks like it'll run you about $75 online.
Yes, it's the same part for both engine sizes.
As to location, I believe it's somewhere under the carpet. You won't find it in the FSM, it's only covered in the separate ABS diagnostic manual. I have the 1993 ABS manual, but I don't think that will help you because they'd changed the ABS supplier by 1995.
EDIT - plug that part number into eBay and there are loads of them for sale.