Hello, I want to replace original old bolts on front end cover and on water pump with steinless steel bolts. Anybody knows what are proper dimensions?
Thanks

The screw dimensions you find at RealOem.

I bought a high quality stainless bolt kit from Chris Powers at Desmo Parts (www.desmoparts.com) 713-222-0832. He's also present on Ebay as seller desmoparts.  This route might be cheaper than raw bolt purchase; you'll have to compare pricing locally to you to answer that.