The 99 tires are much bigger than the 90 tires. With the smaller tires on the 99 you would be going slower than indicated on the speedometer.
The speedometer is electronic on a 1999 Ram, and does not have a cable.
It should. A 2005 wrangler hardtop fits a 1997 wrangler.
You can get a set of coil spring blocks that will give you a decent amount of clearance for larger tires.
No.
Disconnecting the speedometer is illegal.
Yes
Yes
Yes.
Not exactly. The body styles are different. A 1991 Jeep Wrangler is a YJ as a 1999 is a TJ. t
No.
A 1999 Ram does not have a speedometer cable. The speed signal comes from the abs system.