hi, i'm building a 1360 supercharged engine for weekend use and some race events, but i'm not sure if i will need unleaded seats installed for the reason that i will be running premium unleaded always, so will i need seats or not. if the engine was for a daily driver i would get new valve seats done, but it;s a weekend car.

If it's for weekend sports use only and you don't expect much engine life until next rebuild you will get away with it.
Note that premium unleaded is no kinder to your valve seats then the regular unleaded, neither has ANY lead, or lead replacement stuff in it.
Personally I'd just add some Flashlube, 1mL per L of fuel, I know it works.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Unless you do it properly you will not be able to use it for too many week ends as you will be fixing it more often. Especially if you are force feeding it. Good luck.

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