Rebuild Kits

Does anybody know of a good place to order rebuild kits off the net? I have two engines Im going to rebuild over the winter a 4.3 from an 88' s-10 and a 350 for my 94' s-10. I need a place that has good prices. I see them on ebay alot but I dont know how reliable those guys are. I've also checked google and didn't see much I liked(either really expensive or shady looking) Anybody ever ordered kits online? Im not looking for performance stuff, just quality kits at a decent price.

Check out www.summitracing.com or www.jegs.com

For low buget engine buildups look at PAW
http://www.pawengineparts.com/

the rebuild kits on the old injection systems (anything older then 96) are fairly inexpencive, go to napa and get it from them, or a carquest if you have one by, take nothing less then felpro, and yet i still personally like victor gaskets more then fel pro