mrmiskin,
Sounds like you have a Winchester Model 70-A with a blind magazine. You will need a replacement triggerguard and floorplate to work with a standard Model 70 stock. The magazine box and spring should be OK. Places like Gun Parts Corporation may be able to help you. They have a website at
www.gunpartscorp.com. A local gunsmith may have the parts you need. Hope this helps. Take care...
Joe