2.45s 8 1/4 swap..

and... where can i get a ring and pinion installation kit? i googled, and the best i could find was something called a mini installation kit.

Differential Mini Installation Kit Chrysler 8.25"
$31.95
C8.25IK
Carrier & Pinion Shims, Pinion Nut & Seal, Cursh Sleeve, Marking Compound, Brush, Loctite & Gasket

what else would i need?