opinions about long blocks

hi all i have a 90 chevy fullsize blazer with the 350 tbi motor its time for a new motor so i have been looking around for a replacement i dont want to rebuild the original motor because it has been rebuilt 1
time already and it was cracked and has been welded on i want to go with a recon long block i have heard bad things about interstate and jasper and i have heard that mr good wernch last forever but dosent have good power i was thinking about going with one of the gm performance motors mainly the 300 horse power one with vortech heads on it has any body heard any bad stuff about these motors i dont mind spending the money if i get good power and a long life out of it thanks for your help
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
http://gmpartsdirect.com/results.cfm?singlepart=1&partnumber 067353 there ya go neighbor, brand new 4-bolt in the box for $1279.oo -- Mad Dog

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.