hey guys well im confused.. ive been working on my 510 for a while now im running low on funds and my car started to make like a knocking noise. took it to the datsun shop and said it a broken chain sprocket or tensioner,,, 500bux parts and labor... im thinking of selling it? wat do you guys recomment i should do stick to it and try and fixing it or selling it im getting a good offer a lil bit over double of wat i got it for?