I agree with Bidwhale. The Edelbrock Performer intake is a good one for your application. I think I'd even step down a little on the cam since you go off road with the Jeep. I'd suggets looking at Comp Cams, 262 Hi Energy cam. I've used this cam in several SB Chevy pick-ups and had very good luck with them. Lots of lowend torque.

Also stay with a carb no bigger than 600 cfm, such as a Holley # 1850 or the Edelbrock #1406. Also a set of small tube
(1 1/2- 1 5/8 inch) headers will help.

Also consider recurving your distributor. If it has the correct initial timing, the correct advance rate and total timing it will make an engine a pleasure to drive. However, that usually isn't the case and your giving up a LOT of lowend torque and horsepower.

Initial timing should be about 12-15 degrees BTDC.
Total timing should be about 35-38 degrees BTDC @ 2800-3000 RPM.
The vacuum advance should be limited to about 10-12 degrees and start to drop out at about 12 or 13 inches of vacuum.
Don't spend a lot of money on a fancy distributor. The GM HEI unit will do everything you need.

I hope some of this helps. Have fun.

Ron