Hi Lee,
If it was me i would only use the original style bushes that GGR remakes, you can only get them from GGR as ford ran out.
The poly bushes give to much slack on all the 2wd cars my friends have done and some have reverted back to the original style ones, not been in a 4wd with the complete back polyed but in the 2wd it feels sloppy and dangerous when driving at high speeds and wanders about a bit especially with larger rims on.
I am sure you will get lots of different views on this.
Cheers Johnny..