RCA is not necessary. However, after changing front suspension, the alignment must be readjusted. That being said, spacers help

okay well when my shocks come next week and the front suspension is 100% done, the rear suspension is gonna start getting worked on so i will see what happens.

Is getting the rear leaves reset a good idea or should i just use lowering blocks?
what is the difference?

or is it possible to remove the rear leaves and make some coilovers with little modification ? (haven't seen anything on the wiki about this )

Quote:* $200 vs $100
* Lowering blocks are reversible. Remove blocks or add thicker blocks as you like
* Resets are non-adjustable. If it doesn't lower your car enough, you can get them reset again, or add blocks. For too low, say if your car won't pass inspection, you can replace the springs or have them reset again
* On a BW68-equipped 120Y sedan, blocks make for poor/no access to the brake adjuster and brake bleeder