Christ! I could talk your ear off all night with the projects I've been involved in both for business & pleasure. I'm 30 this year and have been in the Engineering arena since I left school. I'm a timed served electronics engineer and spent a couple of years at uni afterwards learning how to solid model using Autodesk Inventor & solidworks. I spent nearly 5 years in South Africa as an engineering project manager / designer / commissioning engineer mostly for water treatment plants but I've designed & built caustic dissolving plants, syrup tank automated cleaning systems, reverse osmosis plants, DI plants! The list just goes on & on so I've learnt a thing or two along the way. My welding interest came about after supervising welding teams in Kenya building a coca cola factory as well as working for a company that built aluminium boats. A good friend in SA was a very competitive super bike racer so I was his crew! I kept the bike in tip top condition for him even changed his damn tyres needless to say he won the 2 seasons I was able to help him, I myself use to ride alot of MX and enduros and always rebuilt my own engines and they are 1/4 of a superbike nowadays. I also repaired gearboxes for a year, from everything from trucks to race cars. I have always worked on cars from the age of 15 and they are my real passion, I've just never had the time to build one really. My job at the moment is working for a military hardware manufacturer as a project manager, I'm in the middle of developing a new machining process to hold the wings & tails on a plane!!!!! No pressure, I'm using the same machine they use to bore than Maclaren SLR blocks. So as you can see I have been very fortunate in my employment and have had some awesome jobs that have taken me into all manner of industries and processes. I hope that doesn't make me sound like a knob!?! Its just an insight to what I have been involved in without going into the boring details. But I think if you know how to torque a bolt and use a micrometer you can build a motor, if you can change a head gasket your on to a winner and welding is just practice, I taught myself! Thats right, But its a lot of work to get it in there and I can't really recommend doing it. I don't know my S3's but if it has the 058 block you could use that crank but like I said its a bitch to get in, certainly not for the faint hearted. The rod stroke ratio is right on the limits of what you want aswell. If your going all out fella and you have an 058 block considered swapping for a tall deck block and go 2.2, better rod stroke ratio and obviously more potential or if your a proper badass go for an R32 motor with a silly turbo and destroy some gearboxes! Just like this thing:- http://www.youtube.com/watch?v=4Id2O0vC7Lk I see you've already had a VR6T so you would be well in your comfort zone.:icon_thumright: If I could start again I WOULDN'T build the motor I now have!