Prepping for a BBC conversion

[87Lowrider]

When I bought my '87 SWB, it had already been slammed and sits perfectly as far as I'm concerned. I've found and purchased a 454 for it from a '76 3/4 ton p/u. I'm in the process of preparing the engine for a transplant next month.

Here's how it looked when I bought it in 2007


The front has 2 1/2 drop spindles and shorter springs to obtain the current stance. Roughly 3" from lower control arms to the pavement. Rubs on some speed bumps, but that's ok. Once I drop the BBC in it, it's gonna sink even more.

What I need to do it get it up enough to offset the weight difference without changing the stance too much.

Re-Install stock spindles?
Change out springs for Heavier duty springs?

Any thoughts?

Kenny