Marlin's 5" SAS Kit-Tire Size

[noride]

Currently researching my Build up.86 4runner, 22re, Auto but going 5spd. I was planning doing Marlin's 5" SAS kit with 37 x 14 Bias Iroks on 15x10 wheels with 3 3/4 bs. Will I need to trim or how much will I need to trim? Is is essential that the box be moved forward during the SAS? Thanks!

[reklund5]

I'd go for 3.5 or3" BS wheels to help keep some clearance and stability.  You'll prolly have to trim the front fenders and tub the firewall a little to eliminate rubbing, or set up some bumpstops to keep the tires outta the steel...

You *should* be ok in the rear, but may have to trim the trailing edge of the fender a little...

It not essential to move the box forward, but it sure is a good idea.  The factory mounts were never designed with big tires in mind.  I'd plate each side with some 1/4" and box the top, as well as sleeve the holes to make a super sturdy steering box mount.  If that fails on the trail...well it just sucks.

Ryan

[Marketing]

To clear 37's you will need to cut and pach the firewall.

Directions are here...
http://www.marlincrawler.com/firewall.html

[toybuilt]

If your running toy axles I'd go with 2.5 in back spacing. I like TSL's but would like to try boggers.

[FXR UPR]

I have Marlin 4" fronts and run a 36-13.5 15 Irok on 15X10 with 3.75 backspacing and 1.5" spacers infront.  I have trimmed my fenders about 2" and rarely touch the back of the fender/firewall area under full stuff with the wheel turned.