NEW GRC/MAD Simulation RC CAR V8 ENGINE. Is a hobby grade replica of a V8 engine, designed for Real RC Crawler Enthusiasts. This Engine is often compatible with popular Crawlers like the Traxxas TRX-4, Axial SCX10 ll, Capra, AX90104, Vanquish VS4-10 Pro/Ultra as well as several other crawler models and designs.