From what I've read here and the CZ/BRNO section of rimfirecentral.com you will have to do some inletting. The trigger group is different on the 453 ( single set trigger vs. standard). I can let you know specifically after Hooper is finished shortening and threading my barreled 453 action. I have a tacticool stock waiting to be inleted and pillar bedded. The above link will be my guide. I just pillar and devcon bedded my 700 and Mauser 98. They came out perfect. You just have to be careful using your dremel. The devcon is great bedding material. $40 kit will do at least four stocks.