No one could mind esp if it's revamping a sportered rifle flying pig.
The only thing I would caution is that it's quite a technical thing to do - ballsing up the pad fitting etc could spell doom in terms of accuracy, but then Peter's excellent guides should show how to do it well. You can find them by clicking on the link at the bottom of Peter's posts or
here.
One word of warning - costs can in fact spiral above what you'd pay for the real thing. I seem to recall one rifle that after it was converted parts sourced etc was in excess of £2,500! If you spend too much then you're still left with what is a replica.
Good luck tho!