Car is in gettng new shoes, can I fit 205 rubber on there on standard rims / guards? Is there enough room?

NO to the rims.....you will need a 6 inch rim

Yes they will fit under the guards.

A) you should not put them on standard rims. As Craig said you will need 6" rims

B) you will need different struts to run 6" x 205 under stock guards at the front

It can be done
I run 205 front and 225 rear with stock guards on an L