My friend has a 1999 Bonneville that he wants to convert to */C. Has anybody done this conversion and if so how difficult was the job? What all would have to be switched?

http://www.bonnevilleclub.com/forum/...e=article&k=31

Explains it all

Sell the 99, and buy an SSEi. That is the most cost-effective and simple solution.

Realistically..

It "could" be converted. ZZP does sell a kit to make the conversion. And some have also run L36 bottom ends for replacement to L67 bottom ends. However and I'd like to ensure we are clear.

Most everyone would suggest using the proper motor for the proper application. The L67 is a different bottom end than the L36 and was engineered that way for a purpose. To be stronger.

It is also possible to get a drop out from a SC'd car and put it in. Depending on pricing it might be easier to convert with a drop out than adding an SC to the L36 motor.

It'* not right for us to merely say .. sell the car or no it can't be. It is possible, an informed person would most likely not make the conversion on an L36 motor for a daily driver. A drivetrain swap in my opinion is a better option, ideal is buying the car already built as a SC car.

And every option listed above will be more time-consuming and costly than selling the SE/SLE/SSE and buying an SSEi. And to top it all off, with the SSEi, you get all the extra goodies and the better suspension.

Correct...I was adding on the possibilities in case someone is attached to their car or doesn't have the option of selling/buying.

I second the drop-in suggestion. With the L36 higher compression you'd be limited as too how much boost you could run, and the bottom end isn't as strong. I've done several S2 L67 swaps for people, and each time we purchased a written off car. That way you've got your PCM, wiring, complete engine, trans, and as needed for some of the cars I did, axles, steering knuckles, racks, etc. This is a very cost-effective and easy way to go.