The most accurate appearing Challenger to use is an ORIGINAL MPC., or the AMT kit. Glue on the roof, lightly sand off the vynil texture to smooth it out, use the 440 from the 71 Charger kit, and your good to go. The Revell Challenger is a bit large for 25th scale, but maybe it's just me. The Revell kit IS larger than the other two kits to me, that's why i mention it. Hth.