Got 2 working now, that ABS acetone trick seems to work really well! Thanks korreka for the personalized help! So glad I found this thread and got these running. Here are some pictures of the 2 builds now that I have my 10 posts:

Original Golden Arrow upgraded with Hobby grade electronics:

Hobby electronics upgrade, 2.4ghz, digital, and low profile servo to avoid cutting battery box.

Ready to Run after a 3d printed bumper!


Ebay purchase that started with transmission mount damage, and trim issues (purchased largely for the original bumper):


Ebay purchase with cracked chassis and transmission mount

ABS repair time

Repair complete, not perfect, but first time and it runs!

Kicking it old school!

Uncracked front bumper seems to be incredibly rare at this point, hoping to get some better 3d print options from this as a bit of a guide