6500 OPTIMIZER drop in

I'm thinking about getting this

http://www.65engineparts.com/inc/sdetail/70/3209

it looks like its a reman drop in to include turbo. anyone ever go this route?

its 3k cheaper than a p400 long block and 9k cheaper than a p400 drop in.

https://us-engine.pissedconsumer.com...ints/RT-P.html

http://www.dieselplace.com/forum/63-...roduction.html