SIN R1
The SIN R1 is a sports car made by Bulgarian manufacturers SIN Cars. The R1 features an FIA certified tube frame construction, carbon fiber body and an active rear spoiler. It came with 3 different engine choices – LS3, LS7 and a LS9. The only transmission offered is a 6 speed manual. The car weighs just 1250 kg and has a top speed of.
| engine | displacement | bore/stroke | compression | induction | hp/rpm | torque Nm | 0–100 km/h |
| LS3 | 6,162 cc | 4.06 in bore and 3.62 in stroke | 10.7:1 | N/A | 450 bhp/5900 | 585 | 3.9 sec |
| LS7 | 7,011 cc | 4.125in bore and 4.00in stroke | 11.1:1 | N/A | 530 bhp/6300 | 650 | 3.5 sec |
| LS9 | 6,162 cc | 4.06 in bore and 3.62 in stroke | 9.1:1 | supercharged | 650 bhp/6300 | 820 | 3.0 sec |