Installing Kinman's in your Squier classic Vibe 50s StratHi Paul,we have not received any reports from customers about difficulties installing Kinman's into a Squier Classic Vibe 50s.  However it would be wise to check for yourself by downloading our Strat Dimensions page found in the &gt;Technical Section &gt;Additional info &gt;Stratocaster TAB&gt; DimensionsTo begin your order click the BUY button for the pickups of your choice and specify your pickups.  If you like Include one of our excellent No-Soldering Harness and eliminate soldering as well as ensure the pickups achieve their full sonic potential.  I review all orders so don't worry if you don't know the answers to some of the questions, as long as you describe the model of your guitar accurately I will make sure you get the right pickup configuration.  I will contact you if I'm also not sure.It would be great to see your order, hope to serve you soon and we look forward to another delighted customer.Regards, Joe (Technical Help &amp; Customer Care)