The GSC Power Division R2 stroker camshafts for Mitsubishi Evo 1–3 with the 4G63T engine are offered as 274/274 billet cams. The listing notes that a beehive spring and retainer kit is required with these cams, making them a specific camshaft option for Evo 1–3 4G63T engine builds where the 274/274 profiles are desired.
GSC P-D Mitsubishi Evo 1-3 4G63T R2 Stroker Cams 274/274 Billet (Beehive Spring/Retainer Kit Req)