I am considering putting a stop to the single turbo small block and building a twin turbo big block. My question is, I am going to get a tubular k-member and a-arms as well as a coil over kit which converts stock style struts to coil overs. When you order the springs they come in different weights and I am not sure which weight to order. Is there some kind of formula to figuring this out. I appreciate any help anyone offers. Thanks

 

How much weight is on the front axle? Without knowing that, you'll never know what springs to get. Springs don't care what engine you use. They just want to know how much weight they need to support.

Leave the stock springs in the car until you can get it weighed.