2. Car to learn how to screw

Good evening Community I’m looking for a 2nd car to learn screws as a hobby. Thought to an old car maybe direction H-approval since the less electronics it should actually become easier? Shouldn’t come in the purchase over 3000€ and bring a certain tuning potential. I’m a layman about screws but I’m lucky to have a garage on a tuning yard and can also get help from there. Brands in themselves no matter sol If only in Germany have a good parts availability and since it is a second car the parts should also be affordable or maybe also hollowable from the scrap yard. Thanks in the above Max.