Random idea triggered by 3-engined Mirage III discussion
here: what about a 3-engined F106 'Viper" maybe with something such as 3 x General Electric YJ101 engines in that classic BSG Viper look:
By way of comparison, a 'standard' F-106 with a single Pratt & Whitney J75-P-17 had up to 24,500 lbf (109 kN) thrust with afterburner with engine weight of 5875 lb (2665 kg) whereas 3 x J101s would have a combined thrust of up to 43,200 lbf (192 kN) and weight (excluding structural) of ~5701 lb (2586kg).