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Message: <blockquote data-quote="Makoto" data-source="post: 1488639" data-attributes="member: 21863">EVERYTHING is harder with the 4v. way less room, parts cost more/are harder to find, double the cams, the coolant system is worse, and on top of that if you want serious power you need a power adder anyhow.there have been many times i wish i started with a GT for all these little nickel and dime reasons.my advice is use the wap block with a set of trick flow heads, enjoy the weight reduction, and similar power but there's no way in hell he's gonna do that now because of the sunk cost effect.Iron block: 155lbsdohc head weight: 130lbs (for both)sohc head weight: 90lbs (for both)WAP block: around 80 lbsiron block sohc heads: 245bswap block with sohc heads: 170lbs (-75ish lbs!)wap block with wap heads: 210lbs (-35lbs) ever weigh the intakes? the huge cast aluminum 4v intake definitely weighs a LOT more than the PI GT intake. valve covers, cast aluminum on 4v's while sohcs are plastic, i think. oh and hood clearance is important, too.just so people know, swapping an aluminum block into your car will shave like 95-100lbs off the front end. they may be all aluminum but its a LOT of aluminum <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" />the 4v stock heads flow better but the trick flow head cam package will yield more power than a stock 4v. of course none of this matters all that much if you're going to throw a blower on it.just so everyone knows the cost, pro's, and cons. if i could have it anyway i wanted i'd have an aluminum block with that trick flow head cam package. between that, the mm k member/control arms, and battery relocation you could easily shave 220 lbs off the front end of the car. that's gonna make everything better.but hey, i'm just a dreamer, i guess.</blockquote>