Door to manufacturer influx in GTP opened by rules extension, says IMSA boss

The extension of the lifespan of the GTP category in the IMSA SportsCar Championship could pave the way for new manufacturers to join, series boss John Doonan believes. IMSA currently boasts Acura, BMW, Cadillac, Lamborghini (endurances events only) and Porsche on its roster of GTP manufacturers, who all use the LMDh platform.Doonan reiterated IMSA’s position that there is interest from major …Keep reading