Yes, I've been playing from Electric car to Nitro car........just bought 2nd hand RRR and 1st hand (very old discounted engine, OS CV-R) last weekend..... Engine tuning may give you lot of fun (or trouble) when compared with Electric car!!!!
Alternatively, you may consider Kyosho Spada 09L / KF01 (more expensive) as starting if you like kit than RTR!
For sure, you will drop your first nitro car OR consider another nitro car very soon!
Now, I'm suffering from garage overflow and wonder which one to decomission to migrate the electronic parts to my 2nd hand RRR!!