65 trailing arms VS 4 link

[baggedbigblock]

I searched the site already. My truck is at the fabricators right now, I want a budget build for a 350hp truck, no drag racing just fun on the streets.

I have the bag setup already and we are putting 2.5" spindles and bags up front and the rear I am not sure about.

I was going to just bag the trailing arm with a 3" block and fab up a rear bar, the fabricator says I will have left to right movement when I raise and lower the truck. I plan on running 295/50/15 tires on 15x10 and I dont want to worry about the sidewall hitting one side or the other. I dont want to cheap out either but I am not sure if I need to spend 350 more on a universal 4 link.

To give you a better idea, I plan on parking on the frame, riding 2" off the ground and then fully inflating only over curbs/speed bumps. I figure he can set up the rear to be level at ride height and with a bag in factory spring location will I really get that much side to side movement?