Replica Track Set (2) for Ertl 1/16 Scale IH “Side Light” TD-25 Crawler
This model is very similar to another model of the TD-25. That model has the lights on the top and has a plastic/rubber exhaust stack.
Replacement Replica Track Set for Hubley #505 Crawler – Black 3D TPU
HUBLEY #505 CRAWLER / LOADER IDENTIFICATION GUIDE. They do a good job, but they aren't quite as detailed as what you are making. Early Hubley construction styling. Sorry, the crawler is NOT included in the price.