im 4 linking my lincoln towncar,,, it will give all the free play needed in the rear suspension nothing is holding nething up but the link bars..... im doing it cuz imma have mine bodydropped... as for 3 wheeling with the 4 link im not to sure my boy had 4 link on his bagged pickup and the link broke off the frame cuz he was side to sideing it all day kid drove off the fuckn rd.... and it wasnt no ghetto welds either i dunno tho... never heard of sling shot tho .. but neways i got 12s in my lincoln now with all the stock car shit on the rear... so u dont need one to run 12s on that perticular car