I have an older TBI style throttle body with a complete harness, Holley HP ECU, wideband O2 sensor, as well as a external fuel pump, and pre/post-pump filters. It's the 550-412 kit that supports up to 600 HP (https://documents.holley.com/199r10507rev.pdf). I have the user manual laminated and in a three ring binder as well.

I was going to put this on my 420ci SBC, but have decided to go with a multiport deal instead. It'd be everything in that kit, minus a few very small pieces like screws, mounting bolts, and maybe a clamp here or there. Nothing that can't be sourced from a local hardware store for about $20. Basically, this is a complete EFI swap minus the fuel line...unless you want to go with an in-tank pump deal.

I'd like to get $1100 plus shipping (which is about what the Holley HP ECU's alone go for right now).

PM me for details and/or pictures.

 

Some pictures here: https://www.flickr.com/photos/87378960@N00/

 

Bump...willing to take offers.

 

New lowered price. This will control just about anything...perfect upgrade for someone who has an SBC now but might want to run an LSx in the future.

$1100 + the ride.