Wheel Tubs???

Hey, Im lookin' to put some wheel tubs in my 78' nova. I have no idea where to start?? If i could get some info on this it would be greatly appreciated!!! :D Thanks Justin

http://www.hotrodder.com/projects/backhalf/tubs.htm
http://autoweldchassis.com/Instruct.ivnu
http://autoweldchassis.com/minitub.ivnu
http://www.flemworld.com/Hto/mtub.html
http://www.techarticle.com/febtech/t...s/tuckin20.htm