FLM Caster Blocks
 

I have the FLM blocks for my FLM pede setup and wanted to know what steering linkages to use since the ones I have are too short.

Simple- set the truck up like you would normally run it, hold the castor block level, then measure the distance between the closest holes on the castor block & chassis mounting point for the link rod- this gives you the hole to hole length. Then look for a rod which matches, and it can be lengthend/shortened by rotating the ends in the usual way.