It all comes down to you, and how deep your wallet is. The cheaper you go the more frequent your repairs will be. I am not saying you should have the money if you want to wheel, just saying no matter what you will have to come up with the cash one way or another if you want to wheel. If you want quality and reliablity, you have no choice but fork it over. If you cheap out you will be replacing parts practically everytime you wheel. Axles are where you should focus your attention first, thats my opinion but if you lock up the front and you dont have good axles, they will snap like nothing. If you get good axles, you can get away with a spool, or even welding the spidergears. There are alot of nay sayers about welding but I have had success, a friend of mine had a low 12 second Maverick with a welded 8inch diff. He raced it for three full seasons, I bought the pumpkin off him and have had it in my daily driven Comet now for 9 years with no problems. The Comet has been parked for the last 2 years but was driven hard for 7 years. I fry the tires at every opportunity and that rear end just laughs it off. If you weld it, make sure you get enough heat, those spiders are very hard, and its even harder to get a deep penetrating weld. Heat it up with a torch to a light cherry red and you should be good, and watch your axles snap like toothpicks. If you are easy on the skinny pedal you might be fine, unlock one hub when you can for tight corners and such.