Should I ladder bar or 4 link

To the OP. How much front suspension travel do you have? Shocks? Mono leaf springs to go with the Cal Tracs? IMO you'll be wasting money and time installing ladder bars on that car. There is no reason that the Cal Tracs won't work.

I ran 6.50 with a 1.43 60' on radials on an un prepped track at grudge night with 9 way Rancho shocks. This car with less motor has been 1.38 on a good track and 1.40 in street trim. I'm hoping when I get my converter back to go some low 1.30's after tuning.

If I ever step up to big power I'm going to a four link and be done.