250# rear springs, where to buy? Options

[914helo]

I am coming close to finishing my Subaru SVX 3.3L engine swap into my '73. The 3.3L is heavier than the other Suby motors. I currently have front and rear sway bars and stock torsion bars (am looking into different front 911 suspensions). This car is for fun weekend trips through the mountains where I live. I would rather have the better handling over the comfy ride. I saw Pelican had 180# rear springs and renegade is selling 200#. Where are people buying 250# springs? Is this going to be overkill for my car? Thanks

[ArtechnikA]

Many places from which to choose:

Google Search for spring makers

You will need to know a few basic parameters in addition to your desired rate:
coil OD and free height among them, as well as total suspension travel (because high rates typically require big wire and coil bind is bad...).

You will definitely want them normalised and shot-peened. If you use anything like the stock spring supports (although I wouldn't think so...) you will not need them closed-wound and ground flat, but those are things to consider.

You start heading outside the 'normal' envelope and you're in CustomLand pretty quickly.

With that much spring you're going to need "above average" damping too. Bilstein Rallye valving is probably close.