Replacing Rotton Top Plates

Just taken the front spension strengthening plates off the inner wings and found alot of rot. I need to replace the top of the inner wing.
Smcka stocks the short top plate replacement panels but not the nice long ones. My rot extends towards the bulkhead so I could really do with the long ones.
Question: What have other people used - long or short?
I could grab the short ones (cheaper and quicker to arrive) then add extra metal between it and the bulkhead area to which the inner wing joins. Not sure if it will be worth the extra hassle or not?
Smcka stocks the short top plate replacement panels but not the nice long ones. My rot extends towards the bulkhead so I could really do with the long ones.
Question: What have other people used - long or short?
I could grab the short ones (cheaper and quicker to arrive) then add extra metal between it and the bulkhead area to which the inner wing joins. Not sure if it will be worth the extra hassle or not?