sheet metal tool?

[clay69camaro]

I'm looking to make some cuts to my floor boards and replace them. All I have is an angle grinder and would like to make a precise cut without all the sparks. What is the tool of choice I need for this job.... and for now I won't be able to purchase a plasma cutter as nice as that would be it's a little out of my budget

I would ideally like to keep this tool for future jobs like my quarters and roof and trunk, and... lots of sheet metal needs to be replaced

Thanks everyone