[Aussie Mike]

Don't be shy. We're really a friendly bunch despite the banter. Ask as many questions as you like. If it stimulates healthy discussion and info sharing then it's all good.

I'm probably one of the early adopters of an LS motor in Cobras. There weren't many around when I started building mine but there's been plenty built since. I got quite a few negative comments in the early days but eventually most people see the merit in the motor design. There's even quite a few that have switched camps in the years since.

With the relaxing of the emissions rules there are a few more options open to you. You can put a late model Windsor motor in if you want to.

Any of the options out there (And there's plenty of them) will supply more power than you'll know what to do with. I think we get a bit hung up on numbers some times.

We haven't even started talking Lexus motors with turbos or the new 5.0 Coyote Ford...

eventually the engine choice will come down to a few factors.

1. what you can afford or are prepared to spend.
2. what you personally like (It's your car after all).
3. what you can get through rego.
Generally option 1 controls options 2 and 3 and you'll cycle through a few times.

Don't forget that what might seem cheap now can work out expensive later. An old AU3 5.0 Windsor with 200,00 on the clock from the wreckers may be a bargain at $2K but having to rebuild it a year later for another $4K probably makes it less atractive than a new crate motor for $6K with a waranty.

The LS motor reprsents good bang for buck in a compact lightweight package that fits neatly into a Cobra engine bay. Engine management is easy to set up with penty of aftermarket support from people and busineses who have done conversions already.

For example you can buy nearly everything from the factory for the conversion. GM Performance Parts supply looms and most bits you would need.

The new fords are also starting to get represented in the aftermarket as I think Ford is trying to tap into the hot rod market that the LS has grabbed a big chunk of.

Cheers