As you'll be aware by now, GT7 has engine swaps! Yay! 🎉 The feature works by either gifting you an engine through a roulette ticket (rare in general tickets, some engine-specific tickets are available) or as expensive buyable items through the engine swap facility in GT Auto. Only some cars can. All available swaps for the BMW 3.0 CSL '73 engine in Gran Turismo 7.
Turn the 2003 BMW M3 into a high-performance beast with a 2011 GT3 BMW Z4 engine swap in Gran Turismo 7! With 800BHP and a top speed of over 200MPH, this max. I was very impressed with the fuel economy improvement with the BMW Z4 GT3 engine in the BMW M3 '03, and the Honda NSX GT500 in the '92 Honda NSX Type R. If not for weather they can take Le Mans 700 with no (or one?) pit stop.
BMW E89 Z4 Roadster / Coupé - Z4 GT3 conversion (S65 4.0L - P65 4.4L V8 ...
Audi TTS Coupe '14 - v1.23 Toyota MR2 GT-S '97 - v1.15 P65B44-Z4 Source car: BMW Z4 GT3 '11. The P65B44-Z4 to E46 M3 swap is a reference to the BMW M3 GTR '03. The SR20DET-Silvia-S15 to Silvia S13 Q's and K's Dia Selection swap is a reference to the Nissan Silvia K's (S13) '91.
Alfa Romeo 4C Gr.3 Road Car - New in v1.32! BMW M3 '89 - New in v1.32! Subaru BRZ S '15 - New in v1.32! 2JZ-GTE-Supra Source car: Toyota SUPRA RZ '97. The BMW 3.0 CS was a luxury sports coupé developed from the 2800 CS, upgrading its engine to a 3.0. Enjoy! The layout is engine type, the car that it comes stock in, the price it's worth in game, followed by the cars listed that the engine can be swapped into.
BMW Z4 with a NASCAR V8 06 – Engine Swap Depot
BYH-R8 (Audi R8 4.2) - $83,350 Toyota MR2 GT-S '97 P65B44-Z4 (BMW Z4) - $225,000 BMW M3 '03 LT1-Corvette (Chevrolet Corvette C7 Stingray) - $25,500 Mazda Roadster (ND) S '15. I made a point to prioritize the B58-GR-Supra-'20 swap into the BMW M3 Sport Evolution '89 simply because my daily driver is a BMW with the same B58 engine. So to use your example, if I had a single Z4 GT3 engine, I would probably put it in the M3 '03.