Stroker kit..440 Source or Eagle?

personaly i looked at both in length and a few others.the 440 source kit sounds good but if there is any problems like the retainers or locks in their heads you wont know it till its spinning in your blcok you spend good money to machine.
im am running their heads i know what im talking about

during my hunt i called indy and thier kit sounds good a couple hundred bux cheaper than 440 source at 1720 bux.the eagle set up im not sure the price off hand