Dal is Dal Slabaugh at [email protected] or 800-362-9494. He is located at Vandevere Olds in Akron Ohio.
Dal sells ALL GM parts at a VERY nice discount (usually on the order of 30-50% cheaper) than your local dealer. Plus, Dal knows the B-body part numbers better than ANY other person on the planet and has EXCELLENT customer service. I've found other sources that SOMETIMES can beat Dal on price on select items (by a tiny bit), but overall Dal wins hands down.
In other words, if you're still buying your GM parts at your local dealer, you're probably getting SScrewed