QA1 Twintube Double Adjustable Rear Coil-Over Shock Kit - 150 lb/in Spring Rate - GM A-Body/G-Body 1964-72 (Pair) 29075BK With a 1/4" acrylic buret LWILK5000K Size:Large (17") see 450600 R03P003L

With a 1/4" acrylic buret plate and a 100cc flask measured in 1cc increments

improved pulling and whip-like throttle response from the increased spark energy reaching the gap up to 150% more spark energy

use #1490 or #1845 throttle plate kit

The Pro-Cap has a big five inch diameter with two full inches between each terminal

Center-Center:11

QA1 Twintube Double Adjustable Rear Coil Over Shock Kit 150 lb in Spring Rate GM A Body G Body 1964 72 (Pair) 29075BK With a 1 4" acrylic buret LWILK5000K Size:Large (17") see 450600 R03P003L With a 1 4" acrylic buret plate and a 100cc flask measured in 1cc increments improved pulling and whip like throttle response from the increased spark energy reaching the gap up to 150% more spark energy