Huffed6,
My '98 Cherokee has the same rear gears and tires as your car and no doubt your car will have more power. My first gear is 3.83 and second is 2.33. First is unnecessarily low and second IS doggy to take off with, so I would recommend something just about in the middle. Given that, half way makes your first gear about 3.10-1 or a .77 (3.10-2.33)or so difference.
So, IMO your best choice would calculate to about a 3.73 rear gear ratio.
Alternatively 3.55 would give you slightly lesser acceleration in return for a higher cruise speed. I am going guess that your blown engine will provide enough power that should you choose the 3.55's, your 1st gear takeoff will be all you hope it will be.
Good Luck,
Steve
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'98 Jeep Cherokee, 4.0
'56 Willys P/U, 226L
