shooting star 225 Plus?
Small amp with 2 transistors, if it is a stock radio, you should be fine, as said before, make sure your SWR is good.
If the Amp gets hot quickly reduce the power by using the Low power position on the Amp.
It would not hurt to put a fan on it as well.
The Model number is a 225, but you should expect to get about 100 watts or so out of it with say a 50 or 60 watt dead key without pushing it to hard.
73
Jeff