buy some 3/4" all thread from lowes and thru bolt it over top the rear and stack plates. You can do the same thing with the frame rails in the front. Kinda hard to see but its in front of the ice boxes
here it is in the front of the car, also kinda hard to see, its in the front on the passenger side. you can only see 2 tens. I have 3 fives stacked on the outsides of the frame rails.
This is what I am planning on doing next season. I'll probably mount a bar in the t-top well.I used old weight machine weights 10 lbs apeice for a total of 200 lbs to make weight for a class. Stacked them up on both sides and bolted them down inside over the rearend.
Alot cheaper than lead, if you can find an old weight machine nobody wants.