hi, chris alston does a nice front clip, i think they are also doing a rear 4 link conversion,
www.cachassisworks.com also heidts do a similar front end, they also do an independent rear end as long as you dont want to put too much power thru it! and fatman fabrications do these products too. not sure which is best but i am sure someone will post if there is a problem with any of these setups.