Achtung964

I'm debating between ERPs monoball offering and Ground Control's. The GCs are interesting as they also allow for castor adjustments. ERPs are tried and true, both run the same price. I've read that the more castor the better for our cars. Any thoughts on why you would prefer one over the other? Thanks.

Spyerx

I've found the caster limit is more clearance related and the stock adjustment allows plenty of adjustment. There may be some benefit of wheel position if you adjust top and bottom. Similar to what we do on the 997 cars with castor pucks and rsr control arms you can effectively lenthen the wheelbase front and rear. This latter point I'm not sure about.

I have erp front and rear and they are great products.

Achtung964

Thanks. I'm leaning towards ERPs.