i made a franken-hose to fit a stock 99 tj radiator. (same as the stock yj rad just it's alum and plastic)
you should just be able to use stock zj hoses i would think?
maybe a little trimming may be needed but worth a test fit anyhow.
if your napa is as cool as mine (they know nothing on my jeep is stock) they may let you take the hoses out to your rig and test fit them before buying. at very least pay for them, take em home, and test fit. no worky, just return them. i have done both of these countless times in my hometown napa store.
the upper may even be able to be all flexy hose with an anti kink spring inside. the lower however is tricky due to being so close to the pulleys.
like i said i did not use a conv rad but if i had (if i wasn't poor i would have) i think the zj hoses may have reached may have needed a little extension or a trim but it may be worth checking into.
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5.2lswap, metalcloaks, bedliner, tucked belly, d60's, soon to be nv4500 and d300.