I’m looking to buy a Randy’s transmission’s stage 2 68RFE DIY or plug-and-play kit; who’s the best and cheapest place to buy from?

Are any Randy’s dealers on here, or should they go straight through them?

Does anyone have reviews on these kits?

I have 2 Dodge dealer techs who offered to help me build either setup, one being my uncle, so I should have access to all the special tools required.

Are there other build kits I should look into that’ll handle 650+hp?

All advice is appreciated; thanks.