I've run both, radials and slicks. Radials don't work real well with a stick car. Like your experience,they would spin at anything above idle rpm. I've gone 1.60 with slicks with my car in street trim other than the slicks, and my car is pretty much as heavy as yours is. As mentioned, Hoosers grab better, but don't last as long as the MT's. Both are good, however, and you can't go wrong with either.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
I've run both, radials and slicks. Radials don't work real well with a stick car. Like your experience,they would spin at anything above idle rpm. I've gone 1.60 with slicks with my car in street trim other than the slicks, and my car is pretty much as heavy as yours is. As mentioned, Hoosers grab better, but don't last as long as the MT's. Both are good, however, and you can't go wrong with either. 
