oh shit dude... and this is your first bike???

honestly, i'd forget the idea right now.... putting engines and shit together can be really frustrating, and really hard work... and some people have the knack to do it, and some don't... i just don't wanna see you get it then get all fuckin angry at all the money you wasted cuz you can't do it right (believe it's a precision type thing... it isn't just putting bolts on as tight as they go and shit...)

do you have anyone that can help you put it together? you say your friend's got a bike, so does he do all his maintence or does he take it to some shop? if he has rebuilt the top and bottom end himself, then he should have no problem helping you out, but if he just takes it to some shop... i don't think this will turn out too well...

btw you'd probably have to take it to a lawn mower shop to have it rebuilt, but they still charge out the ass like a regular car mechanic... although, you'd still be saving alot more money by buying the kit and even having to pay to have it put all together... new dirtbikes are 2000-3000+

do you live in or near by a larger city? for starter bikes nearly everyone (on the biking forums, i used to be a part of one) will tell you to buy a used bike first... cuz you're more than likely going to be fucking up alot of shit on it... it's best to start out with something that doesn't cost you a whole lot so when ti does go to shit, you can be like oh well didn't cost me much and move on to bigger and better ones.. just a suggestion tho... i was part of a dirtbiking forum for well over a year... and have done quite the fucking research.. cuz i thought i was getting one..

then my grandma made excuse after excuse after making promise after promise....