The fuel shouldn't back log out of the line but I'm thinking about using one way check valves in my truck when I've done the swap. I don't know if that's a good idea or not but my bigger plan is running 2 stock fuel tanks and having a control switch to change between tanks. As for the outsourcing of jobs, there's always an element of risk. You never know what you're paying for but it comes down to skill sets and resources if you wanna DIY. Get burnt enough times and it will motivate you to try doing stuff under your own steam. Your jetting is wrong for the Weber on the 2.0 Replacing the jets with correct ones will massively transform performance - http://www.mightyram50.net/vbulletin...ll=1#post44111