So I go online.. browse the interent, I found most engine damper going for like 50$. So why can't I find an engine damper for skylien for least than 150$ lol?

Anyone have done custom bracket here? Can I buy one ''made '' for 300zx . We know 300zx strut fit R32's strut so the only different could be in the lenght of the damper but I thought these were adjustable no?