Scale: 1/48
Wingspan: 8.5"
Length: 7.5"
Code: CT37BT

The Air Force liked the T-37A, but felt it was underpowered. As a result, the service ordered an improved version, the T-37B, with uprated J-69-T-25 engines. The new engines provided about ten percent more thrust and better reliability. Improved avionics were also specified for the new variant. A total of 552 newly-built T-37Bs were constructed through 1973. All surviving T-37As were eventually upgraded to the T-37B standard as well. Due to a series of accidents caused by bird strikes between 1965 and 1970, all T-37s were later retrofitted with a new windscreen made of Lexan polycarbonate plastic 12.5 mm (½in) thick, which could tolerate the impact of a 1.8 kg (4 lb) bird at a relative speed of 460 km/h (288 mph).

In 1962, Cessna suggested the T-37B as a replacement for the North American F-100 Super Sabre as the primary aircraft for the USAF aerobatic demonstration team, the Thunderbirds. The T-37B was proven as an aerobatic aircraft, was economical to operate and support, and could be flown from small airports. However, the USAF was satisfied with the F-100 and were not interested in trading it in for the Tweet. Its later decision to switch to the F-105 Thunderchief caused several problems, though the supersonic T-38 trainer would later be selected as an economical alternative to front-line fighters.