If there’s anyone who hasn’t noticed or mentioned anything yet the swap prices appear only based on the incoming engine, costs the same to install on any car that it’’s compatible with.
Engine Prices
BYH-R8 (Audi R8 4.2) (414HP 317.3ft-lb)
R5-20vT-Quattro-Pikes (Audi S1 Quattro Pikes Peak '87 (588HP 435.4ft-lb)
P65B44-Z4 (BMW Z4 GT3) (522HP 380 ft-lb)
LS9-Corvette (Chevrolet Corvette C6 ZR1) (639HP 603.9 ft-lb)
LT1-Corvette (Chevrolet Corvette C7 Stingray) (453HP 460 ft-lb)
LT4-Camaro (Chevrolet Camaro ZL1 '18) (649HP 640.8 ft-lb)
LT5-Corvette-C7 (Chevrolet Corvette C7 ZR1) (754HP 715.3 ft-lb)
Hellcat-Charger (Dodge Charger SRT Hellcat) (707HP 650.2 ft-lb)
F136F-458 (Ferrari 458 Italia '09) (563HP 398.5 ft-lb)
F140B-Enzo (Ferrari Enzo Ferrari ‘02) (650HP 484.8 ft-lb)
Coyote-5.0L-Mustang (Ford Mustang GT '15) (434HP 399.9 ft-lb)
V8-Ford-GT-LM-Test (Ford GT LM Spec II Test Car) (590HP 533.7 ft-lb)
Voodoo Missing
HR-414E-NSX (Honda NSX GT500 '16) (603HP 452 ft-lb)
K20C1-Civic-'20 (Honda Civic Type R '20) (315HP 295 ft-lb)
Honda SE75E-2&4 (Honda 2&4) (211HP 87.3 ft-lb)
L539-Aventador-SV (Lamborghini Aventador LP750-4 SV 15) (739HP 509.1 ft-lb)
3UZ-FE-SC430 (Lexus SC430 GT500) (516HP 513.2 ft-lb)
13B-REW-RX-7 (Mazda RX-7 FD) (292HP 245.3 ft-lb)
R26B-787B (Mazda 787B) (690HP 448.4 ft-lb)
LZ20B-Skyline (Nissan Skyline Super Silhouette '84) (555HP 394.9 ft-lb)
SR20DET-Silvia-S15 (Nissan Silvia S15) (246HP 202.5 ft-lb)
VK45DE-GT-R (Nissan GT-R Nismo GT500 '08) (527HP 406.2 ft-lb)
VRH35Z-R92CP (Nissan R92CP) (788HP 578.6 ft-lb)
VR38DETT-GT-R-Nismo (Nissan GT-R NISMO '17) (591HP 480.9 ft-lb)
M158-AMG-Huayra (Pagani Huayra) (730HP 811.8 ft-lb)
M97/80-911 (Porsche 911 991 RSR ‘17) (509HP 360.5 ft-lb)
**M96/76-Porsche-'01 (Porsche 911 997 GT3) - Only seen in pre-launch trailers, not the game at present
M64/03-911 (Porsche 911 964 Carrera RS) (255HP 240.1 ft-lb)
LS7-Rampage (Roadster Shop Rampage) (748HP 700.1 ft-lb)
LS7 BRZ (Subaru BRZ Drift) (1037HP 875.8 ft-lb)
H25A-Escudo (Suzuki Escudo Pikes Peak Special) (981HP 687.1 ft-lb)
Suzuki V8-Suzuki-VGT-Gr.3 (Suzuki Vision GT Gr.3) (577HP 361.6 ft-lb)
2JZ-GTE-Supra (Toyota Supra '97) (325HP 392.6 ft-lb)